A power distribution cabinet

Abstract

A kind of switch board, including cabinet, fixedly arranged with mounting bracket in middle position in cabinet, the upper part of mounting bracket is fixedly arranged with several first post insulator horizontally, the end of first post insulator is provided with first terminal board, first terminal board is provided with first embedded plate, the lower part of mounting bracket is fixedly arranged with several second post insulator parallel with first post insulator, the end of second post insulator is provided with second terminal board, second terminal board is provided with second embedded plate, rotatingly arranged with rotating reinforcing plate in the middle part of mounting bracket, rotating reinforcing plate is fixedly provided with row of insulating sleeve, fixedly arranged with fixed connecting plate in insulating sleeve and extending out from both ends of insulating sleeve, and each insulating sleeve is slidably connected with a sliding connecting plate, which slides and approaches towards the direction of corresponding fixed connecting plate.This application solves the problem of existing technology that switch board needs separate packaging and transportation, and after being placed in user's site, it needs to be assembled, copper bar and secondary line between cabinets, and large amount of after-sales service.

Description

Technical Field

[0001] This invention relates to the field of power distribution system technology, and more particularly to a power distribution cabinet. Background Technology

[0002] A conventional 10 kV power transmission and distribution system consists of incoming line cabinets, metering cabinets, busbar equipment cabinets, and feeder cabinets, forming a single-circuit distribution system. The main insulation uses air insulation, and the phase-to-phase distance between main components such as vacuum circuit breakers, disconnectors, and grounding switches is 210 mm. The standard requirement for electrical clearance to ground is greater than 125 mm. Because the metal structural parts of the main components and the metal supports of the conductive parts are basically close to the edges of the components, the overall size of the air-insulated distribution cabinet is relatively large. For example, using a GN19-12 / 630-20 disconnector switch as the lower isolator and a GN30-12 / 630-20 disconnector switch as the upper isolator, with a VS1-12 / 630-20 vacuum circuit breaker, the traditional main component structure is horizontally installed, arranged in a lower, middle, and upper spatial structure. The operating panel of the disconnector switch is on the left side of the front of the cabinet. The operating panel is connected to the crank arm on the main shaft of the disconnector switch via a metal connecting rod. The electrical clearance between the connecting rod and the primary energized parts must be greater than 125mm, resulting in a distribution cabinet width of 900mm to provide sufficient margin. The power distribution system composed of the above four distribution cabinets has an overall arrangement width of 3600mm. It requires separate packaging and transportation, and after being installed at the user's site, the cabinets are assembled, connecting the copper busbars and secondary wiring between cabinets, resulting in a large after-sales service workload.

[0003] Furthermore, traditional distribution cabinets require dedicated switches for circuit switching, which not only takes up space within the cabinet but also increases the cabinet's manufacturing cost. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a power distribution cabinet that solves the technical problems of excessively large single cabinet width, large footprint, and the need for separate circuit switches, which increase the size and cost of the power distribution cabinet.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0006] A distribution cabinet includes a cabinet body. A mounting frame is fixedly installed at the center of the cabinet body. A plurality of first post insulators are horizontally fixed on the upper part of the mounting frame. Each first post insulator has a first terminal block at its end, and a first embedded plate is provided on the first terminal block. A plurality of second post insulators, parallel to the first post insulators, are horizontally fixed on the lower part of the mounting frame. Each second post insulator has a second terminal block at its end, and a second embedded plate is provided on the second terminal block. A rotating reinforcing plate is rotatably installed in the middle of the mounting frame. A row of insulating sleeves is fixedly inserted through the rotating reinforcing plate, and a [missing information - likely a type of insulating sleeve] is inserted inside the insulating sleeves. The insulating sleeve has fixed connecting plates extending from both ends, and each insulating sleeve has a sliding connecting plate that slides towards the corresponding fixed connecting plate at both ends. The rotating reinforcing plate is used to rotate and drive the portions of several insulating sleeves located on the upper part of the rotating reinforcing plate to rotate, thereby causing multiple first embedded plates to be inserted one-to-one between the fixed connecting plate and the sliding connecting plate at the end of each insulating sleeve in this part. It is also used to rotate and drive the portions of several insulating sleeves located on the lower part of the rotating reinforcing plate to rotate, thereby causing multiple second embedded plates to be inserted one-to-one between the fixed connecting plate and the sliding connecting plate at the end of each insulating sleeve in this part.

[0007] The invention is further configured such that: a rotating shaft is fixedly provided at one end of the rotating reinforcing plate, a limiting tooth sleeve is fixed at one end of the rotating shaft, a fan-shaped clip with an arc-shaped insertion interface is fixedly provided on the limiting tooth sleeve, a cabinet door is rotatably provided on the cabinet body, an interlocking bracket with a bottom opening is fixedly provided on the inner side of the cabinet door, a door welding bracket is fixed in the middle of the interlocking bracket, an operating hole corresponding to the end of the rotating shaft is opened on the cabinet door, and the fan-shaped clip is used to rotate with the rotating shaft to the point where, when the second embedded plate is inserted between the fixed connecting plate and the sliding connecting plate, the fan-shaped clip rotates through the opening at the bottom of the interlocking bracket and inserts into the door welding bracket.

[0008] The present invention is further configured such that: the interlocking bracket includes two parallel plates, each with a through hole; the door welding bracket is an arc-shaped plate structure parallel to the plates and having a square hole in the middle; and the fan-shaped clip passes through the through hole at the bottom of the interlocking bracket and is inserted into the square hole.

[0009] The present invention is further configured such that: the fan-shaped card has a countersunk hole, and a rotating component is fixedly installed in the countersunk hole, the rotating component corresponding to the operating hole on the cabinet door.

[0010] The invention is further configured such that: a plurality of strip teeth are uniformly provided along the axial direction of one end of the rotating shaft near the fan-shaped clamp; a plurality of uniform teeth that can mesh with the strip teeth are fixedly provided along the axial direction of the inner wall of the limiting tooth sleeve; the limiting tooth sleeve is retractably sleeved on the rotating shaft; the limiting tooth sleeve is provided with a limiting hole; and a limiting screw that abuts against the rotating shaft after being screwed in is threaded into the limiting hole.

[0011] The present invention is further configured such that: both ends of the insulating sleeve are fixedly provided with horizontal sleeves, a sliding rod coaxial with the sleeve is inserted inside the sleeve, one end of the sliding rod extends out of the sleeve and a limit plate is fixed to the extended end, the other end of the sliding rod is fixedly connected to a sliding connecting plate, a spring is slidably sleeved on the sliding rod inside the sleeve, one end of the spring abuts against the bottom of the sleeve, and the other end of the spring abuts against the sliding connecting plate.

[0012] The present invention is further configured such that: the mounting frame includes a first vertical plate, a second vertical plate parallel to the first vertical plate, and two horizontal connecting plates connecting the first vertical plate and the second vertical plate; the first post insulator is fixedly connected to the first vertical plate; the second post insulator is fixedly connected to the second vertical plate; and the rotating reinforcing plate is rotatably inserted between the two horizontal connecting plates.

[0013] The present invention is further configured such that: the opposite surfaces of the fixed connecting plate and the sliding connecting plate are provided with arc-shaped chamfers, and the ends of the first embedding plate and the second embedding plate are also provided with arc-shaped chamfers that can be inserted and cooperate with the fixed connecting plate and the sliding connecting plate.

[0014] The present invention is further configured such that: a grounding wire plate is fixedly provided at the bottom of the horizontal connecting plate, and a grounding embedding plate is fixedly provided on the grounding wire plate, the grounding embedding plate being used to be inserted between the fixed connecting plate and the sliding connecting plate as they rotate.

[0015] The present invention has the following advantages:

[0016] 1. By setting up the mounting frame, the first post insulator, the insulating sleeve, the rotating reinforcing plate, the second post insulator, the first terminal block, the first embedded plate, the second terminal block, and the second embedded plate, the present invention forms a "switch" for the circuit on and off of the distribution cabinet through the cooperation of the above components, so that there is no need to set up a circuit switch separately in the distribution cabinet. This structure can not only ensure the normal operation of power distribution, but also help to reduce the size of the distribution cabinet and reduce the manufacturing cost of the distribution cabinet.

[0017] 2. When the circuit breaker is tripped, the rotating shaft rotates 45 degrees counterclockwise. The arc-shaped insertion interface of the sector-shaped clamp is turned into the square hole of the door welding bracket and the through hole of the interlocking bracket. The lower part is now de-energized, and the door can be opened for maintenance. However, if the disconnecting switch is not in the tripped state before power is restored, the door welding bracket will directly hit the arc surface of the sector-shaped clamp, preventing the door from closing. This reminds the operator to trip the disconnecting switch first. The interlocking bracket has a simple design, complete functions, and a unique concept. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention;

[0019] Figure 2 This is a structural diagram of the mounting bracket and its components;

[0020] Figure 3 A structural schematic diagram of the interlocking bracket, door welding bracket, and sector-shaped fastener assembly;

[0021] Figure 4 This is a cross-sectional view of the sleeve;

[0022] Figure 5 This is a structural schematic diagram of the assembly consisting of a fixed connecting plate, a sliding connecting plate, and a first embedded plate.

[0023] In the above attached figures: 1. Cabinet body; 2. Cabinet door; 3. First vertical plate; 4. Second vertical plate; 5. Horizontal connecting plate; 6. First post insulator; 7. First terminal block; 8. First embedded plate; 9. Rotating reinforcing plate; 10. Insulating sleeve; 11. Fixed connecting plate; 12. Sliding connecting plate; 13. Sleeve; 14. Sliding rod; 15. Rotating shaft; 16. Limiting tooth sleeve; 17. Limiting hole; 18. Fan-shaped clamp; 19. Arc-shaped plug interface; 20. Rotating component; 21. Second post insulator; 22. Second terminal block; 23. Second embedded plate; 24. Grounding wire plate; 25. Grounding embedded plate; 26. Interlocking bracket; 27. Through hole; 28. Door welding bracket; 29. ​​Square hole; 30. Spring; 31. Fixing part. Detailed Implementation

[0024] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] A type of power distribution cabinet, such as Figure 2As shown, the device includes a cabinet 1. A mounting frame is fixedly installed in the middle of the cabinet 1. Several first post insulators 6 are fixedly and horizontally mounted on the upper part of the mounting frame. First terminal blocks 7 are provided at the ends of the first post insulators 6, and first embedded plates 8 are provided on the first terminal blocks 7. Several second post insulators 21, parallel to the first post insulators 6, are fixedly and horizontally mounted on the lower part of the mounting frame. Second terminal blocks 22 are provided at the ends of the second post insulators 21, and second embedded plates 23 are provided on the second terminal blocks 22. A rotating reinforcing plate 9 is rotatably mounted in the middle of the mounting frame. Rows of insulating sleeves 10 are fixedly threaded through the rotating reinforcing plate 9. Fixed connectors extend from both ends of the insulating sleeves 10. The connecting plate 11 is provided, and each insulating sleeve 10 has a sliding connecting plate 12 that slides towards the corresponding fixed connecting plate 11 at both ends. The rotating reinforcing plate 9 is used to rotate and drive the portion of several insulating sleeves 10 located on the upper part of the rotating reinforcing plate 9 to rotate, thereby causing multiple first embedded plates 8 to be inserted one-to-one between the fixed connecting plate 11 and the sliding connecting plate 12 at the end of each insulating sleeve 10 in this part. It is also used to rotate and drive the portion of several insulating sleeves 10 located on the lower part of the rotating reinforcing plate 9 to rotate, thereby causing multiple second embedded plates 23 to be inserted one-to-one between the fixed connecting plate 11 and the sliding connecting plate 12 at the end of each insulating sleeve 10 in this part. Rotating the reinforcing plate 9 causes the insulating sleeve 10 to rotate. When rotated to the vertical position, multiple first embedded plates 8 and second embedded plates 23 are inserted one-to-one between the fixed connecting plate 11 and the sliding connecting plate 12 at the end of each insulating sleeve 10 in this part. At this time, the circuit is in the connected state. When the counterclockwise needle rotates to other positions, multiple first embedded plates 8 and second embedded plates 23 are not inserted between the fixed connecting plate 11 and the sliding connecting plate 12 at the end of each insulating sleeve 10 in this part. The circuit is in the disconnected state. Rotating the reinforcing plate 9 controls the opening and closing of the circuit, which acts as a disconnecting switch. Due to the spatial arrangement of the first post insulator 6, the second post insulator 21 and the insulating sleeve 10 and the improvement of the working process, the size of the air-insulated distribution cabinet is greatly reduced.

[0026] like Figure 1 , Figure 2 and Figure 3As shown, a rotating shaft 15 is fixedly mounted on one end of the rotating reinforcing plate 9. A limiting toothed sleeve 16 is fixedly mounted on one end of the rotating shaft 15. A fan-shaped clip 18 with an arc-shaped insertion interface 19 is fixedly mounted on the limiting toothed sleeve 16. A cabinet door 2 is rotatably mounted on the cabinet body 1. A locking bracket 26 with a bottom opening is fixedly mounted on the inner side of the cabinet door 2. A door welding bracket 28 is fixedly mounted in the middle of the locking bracket 26. An operating hole corresponding to the end of the rotating shaft 15 is opened on the cabinet door 2. The fan-shaped clip 18 is used to rotate with the rotating shaft 15 until the second embedded plate 23 is inserted between the fixed connecting plate 11 and the sliding connecting plate 12. The fan-shaped clip 18 rotates through the opening at the bottom of the locking bracket 26 and inserts into the locking bracket 26. The locking bracket 26 includes two parallel plates, each with a through hole 27. The door welding bracket 28 is an arc-shaped plate structure parallel to the plates and with a square hole 29 in the middle. The fan-shaped clip 18 passes through the through hole 27 at the bottom of the locking bracket 26 and inserts into the square hole 29. When the circuit breaker is tripped, the rotating shaft 15 rotates 45 degrees counterclockwise. The arc-shaped insertion interface 19 of the sector-shaped clamp 18 rotates to the square hole 29 of the door welding bracket 28 and the through hole 27 of the interlocking bracket 26. The lower part is now de-energized, and the cabinet door 2 can be opened for maintenance. Simultaneously, if the disconnecting switch is not in the tripped state before power is restored, the door welding bracket 28 will directly collide with the arc surface of the sector-shaped clamp 18, preventing the cabinet door 2 from closing. This serves as a reminder to the operator to trip the disconnecting switch first. The interlocking bracket 26 features a simple design, complete functionality, and a unique concept. The sector-shaped clamp 18 has a countersunk hole, within which a rotating component 20 is fixed. This rotating component 20 corresponds to the operating hole on the cabinet door 2. When maintenance is required, use a tool to rotate the rotating part 20 outside the cabinet door 2, so that the arc insertion interface 19 of the fan-shaped clip 18 is rotated to the square hole 29 of the door welding bracket 28 and the through hole 27 of the interlocking bracket 26. At this time, the internal power is cut off. In this way, rotating the rotating part 20 can not only open the cabinet door 2, but also cut off the internal power at the same time, which is safe, convenient and highly operable.

[0027] like Figure 2 and Figure 3 As shown, the outer periphery of the rotating shaft 15 near the sector-shaped clamp 18 is uniformly provided with several strip-shaped teeth along its axial direction. The inner wall of the limiting tooth sleeve 16 is fixedly provided with several uniform teeth that can mesh with the strip-shaped teeth along its axial direction. The limiting tooth sleeve 16 is retractably fitted onto the rotating shaft 15. The limiting tooth sleeve 16 is provided with a limiting hole 17, and a limiting screw that screws into the limiting hole 17 and abuts against the rotating shaft 15 is connected internally. The limiting tooth sleeve 16 is retractably fitted onto the rotating shaft 15, and the angle of the limiting tooth sleeve 16 can be flexibly adjusted. After adjustment, the limiting screw is tightened to fix the limiting tooth sleeve 16.

[0028] like Figure 2 and Figure 4As shown, horizontal sleeves 13 are fixed at both ends of the insulating sleeve 10. A sliding rod 14, coaxial with the sleeve 13, passes through the sleeve 13. One end of the sliding rod 14 extends out of the sleeve 13 and is fixed with a limit plate. The other end of the sliding rod 14 is fixedly connected to a sliding connecting plate 12. A spring 30 is slidably sleeved on the sliding rod 14 inside the sleeve 13. One end of the spring 30 abuts against the bottom of the sleeve 13, and the other end of the spring 30 abuts against the sliding connecting plate 12. When the first embedded plate 8 and the second embedded plate 23 are inserted between the fixed connecting plate 11 and the sliding connecting plate 12 at the end of the insulating sleeve 10, the spring 30 is in a compressed state. Due to the elastic force of the spring 30, it pushes the sliding connecting plate 12 towards the fixed connecting plate 11, thereby preventing the insulating sleeve 10 from rotating and realizing the connection of the circuit.

[0029] like Figure 2 As shown, the mounting frame includes a first vertical plate 3, a second vertical plate 4 parallel to the first vertical plate 3, and two horizontal connecting plates 5 connecting the first vertical plate 3 and the second vertical plate 4. A first post insulator 6 is fixedly connected to the first vertical plate 3, and a second post insulator 21 is fixedly connected to the second vertical plate 4. A rotatable reinforcing plate 9 is rotatably inserted between the two horizontal connecting plates 5. The structure of the mounting frame facilitates disassembly, assembly, and fixation of the various components mentioned in the invention.

[0030] like Figure 2 and Figure 5 As shown, the opposing surfaces of the fixed connecting plate 11 and the sliding connecting plate 12 are both provided with arc-shaped chamfers. The ends of the first embedded plate 8 and the second embedded plate 23 are also provided with arc-shaped chamfers that can be inserted and matched with the fixed connecting plate 11 and the sliding connecting plate 12. The arc-shaped chamfers facilitate the insertion of the first embedded plate 8 and the second embedded plate 23 between the fixed connecting plate 11 and the sliding connecting plate 12 on the end of the insulating sleeve 10.

[0031] like Figure 2 As shown, a grounding plate 24 is fixedly installed at the bottom of the horizontal connecting plate 5, and a grounding embedding plate 25 is fixedly installed on the grounding plate 24. The grounding embedding plate 25 is used to be inserted between the fixed connecting plate 11 and the sliding connecting plate 12 as they rotate. When the circuit is opened, the drive rotating shaft 15 rotates counterclockwise by 45 degrees, and the lower end of the insulating sleeve 10 is grounded, which protects the operator.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A power distribution cabinet, comprising a cabinet body (1), characterized in that: A mounting frame is fixedly installed in the middle of the cabinet (1). Several first post insulators (6) are fixedly and horizontally installed on the upper part of the mounting frame. A first terminal block (7) is provided at the end of the first post insulator (6). A first embedded plate (8) is provided on the first terminal block (7). Several second post insulators (21) parallel to the first post insulators (6) are fixedly and horizontally installed on the lower part of the mounting frame. A second terminal block (22) is provided at the end of the second post insulator (21). A second embedded plate (23) is provided on the second terminal block (22). A rotating reinforcing plate (9) is rotatably installed in the middle of the mounting frame. A row of insulating sleeves (10) are fixedly inserted through the rotating reinforcing plate (9). Both ends of the insulating sleeves (10) are inserted and extend out of the insulating sleeves (10). The fixed connecting plate (11) is provided, and a sliding connecting plate (12) is slidably connected to both ends of each insulating sleeve (10) in the direction of the corresponding fixed connecting plate (11). The rotating reinforcing plate (9) is used to rotate and drive the part of several insulating sleeves (10) located on the upper part of the rotating reinforcing plate (9) to rotate, so that multiple first embedded plates (8) are inserted one by one into the fixed connecting plate (11) and sliding connecting plate (12) at the end of each insulating sleeve (10) in this part. It is also used to rotate and drive the part of several insulating sleeves (10) located on the lower part of the rotating reinforcing plate (9) to rotate, so that multiple second embedded plates (23) are inserted one by one into the fixed connecting plate (11) and sliding connecting plate (12) at the end of each insulating sleeve (10) in this part. The rotating reinforcing plate (9) has a rotating shaft (15) fixed at one end. A limiting tooth sleeve (16) is fixed at one end of the rotating shaft (15). A fan-shaped clip (18) with an arc insertion interface (19) is fixed on the limiting tooth sleeve (16). A cabinet door (2) is rotatably provided on the cabinet body (1). A chain bracket (26) with a bottom opening is fixed on the inner side of the cabinet door (2). A door welding bracket (28) is fixed in the middle of the chain bracket (26). An operating hole corresponding to the end of the rotating shaft (15) is opened on the cabinet door (2). The fan-shaped clip (18) is used to rotate with the rotating shaft (15) until the second embedded plate (23) is inserted between the fixed connecting plate (11) and the sliding connecting plate (12). The fan-shaped clip (18) rotates through the opening at the bottom of the chain bracket (26) and is inserted into the door welding bracket (28). The interlocking bracket (26) includes two parallel plates, each with a through hole (27). The door welding bracket (28) is an arc-shaped plate structure parallel to the plates and with a square hole (29) in the middle. The fan-shaped clip (18) passes through the through hole (27) at the bottom of the interlocking bracket (26) and is inserted into the square hole (29).

2. A power distribution cabinet as described in claim 1, characterized in that: The fan-shaped clip (18) has a countersunk hole, and a rotating part (20) is fixedly installed in the countersunk hole. The rotating part (20) corresponds to the operating hole on the cabinet door (2).

3. A power distribution cabinet as described in claim 2, characterized in that: The rotating shaft (15) near the fan-shaped clamp (18) has a number of uniformly arranged strip teeth along the axial direction of the rotating shaft (15). The inner wall of the limiting tooth sleeve (16) is fixedly provided with a number of uniform teeth that can mesh with the strip teeth along the axial direction of the limiting tooth sleeve (16). The limiting tooth sleeve (16) can be pulled out and sleeved on the rotating shaft (15). The limiting tooth sleeve (16) is provided with a limiting hole (17). The limiting hole (17) is threaded with a limiting screw that abuts against the rotating shaft (15) after being screwed in.

4. A power distribution cabinet as described in claim 3, characterized in that: Both ends of the insulating sleeve (10) are fixed with horizontal sleeves (13). A sliding rod (14) coaxial with the sleeve (13) is inserted inside the sleeve (13). One end of the sliding rod (14) extends out of the sleeve (13) and a limit plate is fixed to the extended end. The other end of the sliding rod (14) is fixedly connected to a sliding connecting plate (12). A spring (30) is slidably sleeved on the sliding rod (14) inside the sleeve (13). One end of the spring (30) abuts against the bottom of the sleeve (13), and the other end of the spring (30) abuts against the sliding connecting plate (12).

5. A power distribution cabinet as described in claim 4, characterized in that: The mounting frame includes a first vertical plate (3), a second vertical plate (4) parallel to the first vertical plate (3), and two horizontal connecting plates (5) connecting the first vertical plate (3) and the second vertical plate (4). The first post insulator (6) is fixedly connected to the first vertical plate (3), and the second post insulator (21) is fixedly connected to the second vertical plate (4). The rotating reinforcing plate (9) is rotatably inserted between the two horizontal connecting plates (5).

6. A power distribution cabinet as described in claim 5, characterized in that: The opposite surfaces of the fixed connecting plate (11) and the sliding connecting plate (12) are provided with arc-shaped chamfers, and the ends of the first embedded plate (8) and the second embedded plate (23) are also provided with arc-shaped chamfers that can be inserted and cooperate with the fixed connecting plate (11) and the sliding connecting plate (12).

7. A power distribution cabinet as described in claim 6, characterized in that: A grounding plate (24) is fixedly provided at the bottom of the horizontal connecting plate (5), and a grounding embedding plate (25) is fixedly provided on the grounding plate (24). The grounding embedding plate (25) is used to be inserted between the fixed connecting plate (11) and the sliding connecting plate (12) as the fixed connecting plate (11) and the sliding connecting plate (12) rotate.

Images